[PATCH RFC v2 12/16] drm/vkms: Introduce configfs for device name

From: Louis Chauvet
Date: Fri Nov 22 2024 - 12:40:46 EST


Signed-off-by: Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
---
drivers/gpu/drm/vkms/vkms_configfs.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c
index a1ddf25ab6f882ae1857bc82fb4b4a425b6d287d..dede56a8a2c1e866734f9c979c76977370907680 100644
--- a/drivers/gpu/drm/vkms/vkms_configfs.c
+++ b/drivers/gpu/drm/vkms/vkms_configfs.c
@@ -1137,10 +1137,26 @@ static ssize_t device_enable_store(struct config_item *item,
return (ssize_t)count;
}

+static ssize_t device_device_name_show(struct config_item *item, char *page)
+{
+ struct vkms_configfs_device *configfs_device = config_item_to_vkms_configfs_device(item);
+
+ scoped_guard(mutex, &configfs_device->lock)
+ {
+ if (configfs_device->enabled)
+ return sprintf(page, "%s\n",
+ dev_name(configfs_device->vkms_config->dev->drm.dev));
+ return -EINVAL;
+ }
+ return -EINVAL;
+}
+
CONFIGFS_ATTR(device_, enable);
+CONFIGFS_ATTR_RO(device_, device_name);

static struct configfs_attribute *device_attrs[] = {
&device_attr_enable,
+ &device_attr_device_name,
NULL,
};


--
2.47.0